I'm running your kernel with your extra. It took very long to boot 
(somewhere it waits for 3 minutes (saying so), I don't know why). 
journalctl -xe gives continuous USB disconnect / new USB device and 
bluetooth is not working, acting the way I described in comment #13.
Rebooting to the -15 kernel will make everything work, bluetooth 
included, I guess.

Seems like a bug in the firmware or the driver.

Le 02/05/2015 21:32, Pilot6 a écrit :
> Maybe you did not install extra of my image either? Try to download
> the files again and install one more time.
>
> 2015-05-02 22:22 GMT+03:00 Raphaël Jakse <email address hidden>:
>> My bad, I didn't install linux-image-extra from ubuntu updates. In fact
>> 3.19.0-16 unpatched is running fine with this package.
>>
>> But this makes stranger the fact that your 3 line patch makes my
>> computer unstable but at the same time let the bluetooth + the whole
>> stuff work correctly on another kernel after reboot.
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1397885
>>
>> Title:
>>    [Atheros AR9462] Bluetooth looks activated but cannot be used
>>
>> Status in bluez package in Ubuntu:
>>    Confirmed
>>
>> Bug description:
>>    Ubuntu 14.10
>>
>>    System Information
>>          Manufacturer: Acer
>>          Product Name: Aspire VN7-591G
>>          Version: V1.08
>>          SKU Number: Aspire VN7-591G_091B_1.08
>>          Family: Sharkbay System
>>
>>    lspci
>>    07:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01)
>>
>>
>>    lsusb -v
>>    Bus 003 Device 006: ID 04ca:300d Lite-On Technology Corp.
>>
>>
>>    Steps to reproduce:
>>    1. Activate a Bluetooth device (for instance a mouse or a nearby device)
>>    2. On the laptop, press the Bluetooth icon, then "Set Up new Device…"
>>
>>    Expected result:
>>    2. A list of available bluetooth devices is shown
>>
>>    Actual result:
>>    2. Nothing shows up and the spinning icon keeps spinning with "Searching for devices..."
>>
>>    It looks like the bluetooth device does not work at all.
>>
>>    Apparently, there have been previous bugs reported and corrected [1],
>>    but the situation still occurs with this module on my laptop...
>>
>>    [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1024884
>>
>>    ProblemType: Bug
>>    DistroRelease: Ubuntu 14.10
>>    Package: bluez 4.101-0ubuntu20
>>    ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
>>    Uname: Linux 3.16.0-25-generic x86_64
>>    ApportVersion: 2.14.7-0ubuntu8
>>    Architecture: amd64
>>    CurrentDesktop: Unity
>>    Date: Mon Dec  1 16:35:17 2014
>>    EcryptfsInUse: Yes
>>    InstallationDate: Installed on 2014-11-15 (15 days ago)
>>    InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
>>    InterestingModules: bnep rfcomm btusb bluetooth
>>    MachineType: Acer Aspire VN7-591G
>>    ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
>>    SourcePackage: bluez
>>    UpgradeStatus: No upgrade log present (probably fresh install)
>>    dmi.bios.date: 09/12/2014
>>    dmi.bios.vendor: Insyde Corp.
>>    dmi.bios.version: V1.08
>>    dmi.board.asset.tag: No Asset Tag
>>    dmi.board.name: Aspire VN7-591G
>>    dmi.board.vendor: Acer
>>    dmi.board.version: V1.08
>>    dmi.chassis.asset.tag: No Asset Tag
>>    dmi.chassis.type: 10
>>    dmi.chassis.vendor: Chassis Manufacturer
>>    dmi.chassis.version: V1.08
>>    dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.08:bd09/12/2014:svnAcer:pnAspireVN7-591G:pvrV1.08:rvnAcer:rnAspireVN7-591G:rvrV1.08:cvnChassisManufacturer:ct10:cvrV1.08:
>>    dmi.product.name: Aspire VN7-591G
>>    dmi.product.version: V1.08
>>    dmi.sys.vendor: Acer
>>    hciconfig:
>>     hci0:        Type: BR/EDR  Bus: USB
>>          BD Address: 5C:93:A2:EB:FF:43  ACL MTU: 1022:8  SCO MTU: 183:5
>>          UP RUNNING PSCAN ISCAN
>>          RX bytes:2751 acl:0 sco:0 events:351 errors:0
>>          TX bytes:3779 acl:0 sco:0 commands:306 errors:0
>>    syslog:
>>     Dec  1 16:21:16 Miles bluetoothd[631]: Discovery session 0x7fa5da51da30 with :1.228 activated
>>     Dec  1 16:27:43 Miles bluetoothd[631]: Discovery session 0x7fa5da530a50 with :1.230 activated
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1397885/+subscriptions


-- 
Raphaël Jakse
Étudiant M1 Informatique
Université Joseph Fourier - Grenoble

Année 2013-2014 : L3 Informatique - UJF - Grenoble
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